After some 9 mos more play vs AI, I "bunch" the airbases near the Luftflotten they're originally assigned to w/o moving individual units around to balance the available aircraft at airbases. Get plenty of escort for supply drops as the flying units picked when forming the mission. Move the Luftflotten to follow the fronts once in a while. Watch ranges.

Some discussion in forum suggests setting the air doctrine to low% participation and low aircraft per type of mission. Trying to get maximum number missions. After all, when varying these factors, don't see much different in outcomes, usually Axis favored 3:1 in aircraft losses in the scenarios & years played.